Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 366,349
Other comprehensive income (loss)	$ (1,553)	$ (735)	(3,479)	$ (1,943)
Ending balance	382,658		382,658
Foreign Currency Translation (Losses) Gains
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(3,085)
Other comprehensive income (loss)			3,301
Ending balance	216		216
Unrealized Gain (Loss) on Derivatives, Net of Taxes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			2,904
Other comprehensive income (loss)			(6,780)
Ending balance	(3,876)		(3,876)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(181)
Ending balance	$ (3,660)		$ (3,660)